As mentioned in Exercise 7.33, among college students who hold part-time jobs during the school year, the

Question:

As mentioned in Exercise 7.33, among college students who hold part-time jobs during the school year, the of the time spent working per week is approximately normally distributed with a mean of 20.20 hours and a standard deviation of 2.60 hours. Find the probability that the average time spent working per week for 18 randomly selected college students who hold part-time jobs during the school year is
a. Not within 1 hour of the population mean
b. 20 to 20.50 hours
c. At least 22 hours
d. No more than 21 hours Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...